The Journal of International
Advanced Otology
Original Article

Combined Amplification and Sound Therapy for Individuals With Tinnitus and Coexisting Hearing Loss: A Retrospective Cohort Study


Expert Hearing Solutions, Wall Street Audiology, Saskatoon, Saskatchewan, Canada


School of Mathematical and Statistical Sciences, University of Texas Rio Grande Valley, TX, USA


Expert Hearing Solutions, Kelowna, British Columbia, Canada


Department of Audiology, Royal University Hospital, Saskatoon, Saskatchewan, Canada


Department of Speech and Hearing Sciences, Lamar University, Beaumont, Texas, USA


Virtual Hearing Lab, Collaborative initiative between Lamar University and University of Pretoria


Department of Speech-Language Pathology and Audiology, University of Pretoria, Gauteng, South Africa


Department of Speech and Hearing, School of Allied Health Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India

J Int Adv Otol 2021; 17: 514-519
DOI: 10.5152/iao.2021.21169
Read: 1239 Downloads: 615 Published: 01 November 2021

BACKGROUND: The heterogeneity of tinnitus perception and its impact necessitates a tailor-made management approach in everyone. The current study examined the effects of residual inhibition in combined amplification and sound therapy in individuals with tinnitus and coexisting hearing loss.
METHODS: A retrospective analysis was performed on patients with tinnitus and coexisting hearing loss between 2016 and 2019. A total of 72 patients provided with combined amplification and sound therapy were divided into 3 groups based on residual inhibition: (i) complete residual inhibition, (ii) partial residual inhibition, and (iii) negative residual inhibition. Tinnitus severity was measured using the Tinnitus Functional Index before treatment and 1 and 6 months after the intervention. A multilevel mixed-effects model was used to examine the treatment effects including both the main and interaction effects of time and residual inhibition on the tinnitus severity.
RESULTS: Of the 72 participants, 55 (76%) and 61 (85%) had clinically significant changes (13 points in Tinnitus Functional Index) at 1-month and 6-month postintervention, respectively. In the complete, partial, and negative residual inhibition groups, the reduction in tinnitus impact was 100%, 78%, and 74%, respectively. A multilevel mixed model analysis showed that the main effects of time and residual inhibition along with their interaction were significant.
CONCLUSIONS: The study results suggest that combined amplification and sound therapy is beneficial in individuals with tinnitus and coexisting hearing loss in reducing their tinnitus severity, and this benefit was more in individuals with complete residual inhibition. However, these results need to be further confirmed by controlled trials. 
Cite this article as: Ganesan P, Rodrigo H, Schmiedge J, Reiter R, Swapna S, Manchaiah V. Combined amplification and sound therapy for individuals with tinnitus and co-existing hearing loss: A retrospective cohort study. J Int Adv Otol. 2021;17(6):514-519.

EISSN 2148-3817